Internal Combustion Engines
Internal combustion engines work by using a piston to compress air and increase the temperature in the cylinder. When fuel comes into contact with the high temperature, it ignites and creates energy through combustion. This energy transfer is repeated at high speeds. Different types of engines will have varying compression ratios which impacts how much power the engine puts out. The higher the ratio, the more power is generated.
The four most common fuel types for engines are gasoline, diesel, natural gas, and propane. The combustion of fuel is a direct source of air emissions that can contribute to air pollution, smog, and health issues such as asthma, lung cancer, and cardiovascular diseases.
Diesel engines using 50 horsepower or greater are subject to permitting from NCUAQMD based upon the State of California’s Air Toxic Control Measure (ATCM) regulations for portable and stationary engines. In addition, Gasoline, natural gas or propane engines using 150 horsepower or greater are evaluated on a case by case basis for permit requirements.
To obtain a permit for a diesel engine using 50 horsepower or more; or an engine using gasoline, natural gas, or propane at 150 horsepower or more, please submit the necessary applications:
Form 1300 – Authority to Construct
Form 1301 – Internal Combustion Engine
Form 1399 – ATC to PTO Conversions
For more information on District rules and regulations visit:
State Rules:
17 CCR § 93115 Stationary Compression Ignition Engines
17 CCR § 93116 Portable Engines rated at 50 horsepower and greater
If you have additional questions or require further assistance, please contact District staff at (707) 443-3093 or support@ncuaqmd.org .
